KYORITSU KEW 3022 User Manual

(6)SettheRangeselectorswitchtotheOFFposition,anddisconnect
theprobesfromtheinstrument.
DANGER
¡Nevertouchthecircuitundertestimmediatelyaftertesting.
Capacitancestoredinthecircuitmaycauseelectricshock.
Leavethe testleads connectedto the circuit until theLIVE LED
andLIVEcircuitwarningstopflickering.
6-3 Continuousmeasurement
Forcontinuousmeasurement,alock-downfeatureisincorporatedon
theTest button.Pressing andturning clockwise locks the button in
theoperatingposition,thebuttonisreleasedbyturningit
counterclockwise.
DANGER
¡WhiletheTestbuttonislockeddown,ahighvoltageispresentat
thetipofaprobe.Attentionshouldbepaidtoavoidpossibleshock
hazard.
6-4 Outputvoltagecharacteristics
ThisinstrumentconformstoIEC61557.Thisstandarddefinesthatthe
nominalcurrentshallbeatleast1mA,andthelowerlimitofthe
insulationresistancemaintainingthenominalvoltageatthe
measurementterminal.(Seethegraphbelow.)
Thisvalue is calculated by dividing the nominalvoltage bynominal
current.i.e.,incasethatthenominalvoltageis500V,thelowerlimit
oftheinsulationresistanceisfoundasfollows.
Divide500Vby1mAequals0.5MΩ.
Thatis,insulationresistanceof0.5MΩ ormoreisrequiredtoprovide
thenominalvoltagetotheinstrument.
―13―
Nominalvoltage
1MΩ
1000V
0.5MΩ
500V
0.25MΩ
250V
0.125MΩ
125V
0.100MΩ
100V
50kΩ
50V
Lowerlimitofins-
ulationresistance
tosupplynominal
current1mA

KYORITSU KEW 3022 Specifications

General

Brand	KYORITSU
Model	KEW 3022
Category	Test Equipment
Language	English